Hydroxyapatite-coated external-fixation pins
نویسندگان
چکیده
منابع مشابه
Bisphosphonate-coated external fixation pins appear similar to hydroxyapatite-coated pins in the tibial metaphysis and to uncoated pins in the shaft
BACKGROUND AND PURPOSE External fixation pins tend to loosen with time, especially from cancellous bone. A coating that releases a bisphosphonate has been shown to improve the fixation of dental implants in humans. We now tested a bisphosphonate coating on steel pins for external fixation. The primary hypothesis was that coated pins would be better fixed in the diaphysis. METHODS 20 patients ...
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We measured the insertion and extraction torque forces in a randomised study of 76 external fixation screws in 19 patients treated by hemicallotasis for osteoarthritis of the medial side of the knee. The patients were randomised to have either standard tapered screws (Orthofix 6/5 mm) or the same screws with hydroxyapatite (HA) coating. One patient had two standard and two HA-coated screws. All...
متن کاملHydroxyapatite-coated external-fixation pins. The effect on pin loosening and pin-track infection in leg lengthening for short stature.
Pin loosening and infection are inherent complications of external fixation. This study deals with their effects of using either hydroxyapatite (HA)-coated or uncoated external fixation pins in leg-lengthening procedures on patients of short stature. We used HA-coated pins on one side and uncoated pins on the other (randomly determined) in 28 bilateral lengthenings undertaken in 23 patients. A ...
متن کاملHydroxyapatite pins for external fixation: is there sufficient evidence to prove that coated pins are less likely to be replaced prematurely?
OBJECTIVE Several clinical studies have reported that the use of hydroxyapatite- (HA) coated pins enhance external fixation. Although these studies have demonstrated higher extraction torques and lower rates of pin loosening with HA coating, there is little evidence to suggest that these biomechanical advantages translate to a lower rate of pin replacement prior to healing. The research questio...
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This work investigates the impact of biomechanical wear and abrasion on the antibiotic release profiles of hydroxyapatite (HA) coated fixation pins during their insertion into synthetic bone. Stainless steel fixation pins are coated with crystalline TiO2 by cathodic arc evaporation forming the bioactive layer for biomimetic deposition of Tobramycin containing HA. Tobramycin is either introduced...
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ژورنال
عنوان ژورنال: The Journal of Bone and Joint Surgery. British volume
سال: 2004
ISSN: 0301-620X,2044-5377
DOI: 10.1302/0301-620x.86b6.13875